1: Check if the control module's power supply is normal. The indicator flashing means two possible reasons: 1. The power supply is not reaching 220V, 2. There is a short circuit in the devices connected to the control module. Test each of the devices one by one to troubleshoot.
1. Check if the outdoor fan can work.
2. Use manual control logic to adjust the outdoor fan speed, from low to high, and see at what speed the outdoor fan fault alarm appears. Then check if there is any rubbing between the fan and the guide vane ring.
A: 1. Use a pressure gauge to check the pressure inside the copper pipe to see if the alarm is caused by a lack of refrigerant.
2. Check if the indoor fan switch is turned off, which can cause the cooling to accumulate on the evaporator and make the evaporator temperature too low.
1. Check the IP settings of the control module. The main cabinet must be set to 1, and the following sub-cabinets must be set in the order of 2, 3, 4.
2. Check if the wiring between the cabinets is correct.
When using the GD350A (equipped with a communication expansion card) to communicate with a PLC via EIP/EtherCAT/Modbus TCP, what can be done if the inverter loses power but the customer requires communication between the PLC and the GD350A to remain uninterrupted?
A: The key to maintaining communication is ensuring that the control board remains powered. All GD350A models have at least two expansion card slots; you can optionally install a 24V power supply expansion card to continuously power the control board, thereby maintaining communication.
When using the GD28 to communicate with a PLC via EIP/EtherCAT/Modbus TCP, what can be done if the inverter loses power but the customer requires communication between the PLC and the GD28 to remain uninterrupted?
A: The key to maintaining communication is ensuring that the control board remains powered at all times. You can use an external 24V switching power supply to power the GD28 expansion card, thereby keeping the control board powered and maintaining communication with the PLC.
When a low-power SP100 is used to drive a pump of the same power rating, E4, E5, and E6 overcurrent faults may occur. What could be the cause? A: After analyzing the match between the output current and frequency, as well as the unpredictability of the three different overcurrent faults, it was determined that the issue is a hardware filtering problem. Recommendation: Slightly reduce the carrier frequency and slip compensation parameters, and fine-tune the settings based on on-site operating conditions until stable operation is achieved.
Q: In GD300-01A-RT model for Atlas Copco, we are facing regular IGBT failures. What could be the reason and recommendation?
A: During analysis, it was found that parameter P29.03 was not matching the motor nameplate kW rating. The parameter has now been updated as per the motor nameplate specifications.
Recommendation:
Do not modify any parameters in the P29 group, as this parameter group must always remain exactly the same as the VFD nameplate information. Any mismatch may lead to improper drive operation and can result in repeated IGBT failures.
Q: In the GD300-01A-RT 15 kW and 22 kW drives, can the P29 group parameters be changed to match the motor parameters to achieve the application requirements?
A: No. Changing the P29 group parameters is strictly prohibited. The P29 parameters must always remain as per the VFD nameplate/rated capacity. If any changes are required to meet the application requirements, they must be implemented through the customer's controller/PLC logic, not by modifying the P29 parameters. Any unauthorized modification of the P29 group may result in improper operation or damage to the drive
Our site uses cookies to provide you with a better onsite experience. By continuing to browse the site you are agreeing to our use of cookies in accordance with our Cookie Policy.
